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Questions and Answers
Which type of rock consists of volcanic glass?
Which type of rock consists of volcanic glass?
- Granite
- Quartz
- Obsidian (correct)
- Basalt
Which term refers to the solid parts of volcanic eruptions that settle back to earth and cool into rocks with pyroclastic textures?
Which term refers to the solid parts of volcanic eruptions that settle back to earth and cool into rocks with pyroclastic textures?
- Tuff (correct)
- Quartz
- Lava
- Ash
What is the name for the rock formed from large deposits of tephra fragments?
What is the name for the rock formed from large deposits of tephra fragments?
- Obsidian
- Basalt
- Granite
- Tuff (correct)
What does the term 'pyroclastic' refer to in pyroclastic textures?
What does the term 'pyroclastic' refer to in pyroclastic textures?
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What is the term for the tephra fragments that are named based on their size?
What is the term for the tephra fragments that are named based on their size?
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